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视频简介

Brian Cox tackles some of the most challenging and intriguing questions facing science today by using his best material from past programmes and the latest scientific research. Episodes include… Space: How Far Can We Go?（太空：我们对宇宙的探索能走多远？） Brian believes we are at the start of a new age of space travel, where space flight is on the verge of becoming routine. In this episode, he ...。投票权是美国民主的基石，但每张选票之间也存在不平等。这种投票制度如何运作？有可能改变这种状况吗？。